Hi! I am trying to create a “higher resolution” matrix by duplicating, in both dimensions by a factor n, the elements of a “lower resolution” matrix. A naive implementation looks like this: function lr2hr( inarray::AbstractMatrix, factor::Integer ) # Determine the type and size of…

As for efficiency, you probably don’t want to construct this matrix at all, consider expressing it as a Kronecker product with LazyArrays [image] GitHub - JuliaArrays/LazyArrays.jl: Lazy arrays and linear algebra in Julia Lazy arrays and linear algebra in Julia. Contribute to JuliaArray…

Expanding a matrix by duplicating its elements

New to Julia

nilshg May 24, 2023, 10:14am 3

As for efficiency, you probably don’t want to construct this matrix at all, consider expressing it as a Kronecker product with LazyArrays

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Expanding a matrix by duplicating its elements

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